Stitch-separating machine



Nbv. 3, 1925. 1,559,651

.LSMITH ET AL STITCH sEr ARATING momma Filegl Ju'ly 1:5. 1921 "IIIIIIIIIIM IIIW rnonly known as janking-up Patented Nov. 3, 1925.

UNITED STATES PATENT oFFIcE. Y

JOHN SMITH, 0F EABLS'BAREGN, AND FRED RISKS, OF"LEICESTER, ENGLAND, ASSIGN- ORS TO UNITED SHOE MACHINERY GORPGRATION, OF PATERSON, NEW JERSEY, A

CORPORATION OF NEW JERSEY.

srircn-snrnna'rine MACHINE.

- Application filed Jul 13, 1921. Serial no, 484,367.

To all whom it may concern:

Be it known that we, JOHN SMIT and FRED Ricns, subjects of the King'of Great Britain, and residing,v respectively, at Earls Barton, in the county of Northampton, England, and Union forks, Belgrave Road, Leicester, in the county of Leicester, "Eng land, have invented certain new and useful Improvements in Stitch-Separating Ma chines; and wedo hereby declare the following to be a full,'clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

The present invention relates to stitch separating machines which are adapted to operate upon the tread surface of a boot orshoe bottom to indent the same along the line of a scam, the stitches of which are exposed on the shoe bottom. it may be in a groove thereon. This operation is comor -chopping-up. I A i 1 The object of the present invention isto provide a janking-up machine having an improved construction and mode of operation whereby the stitches appearing on the tread surface of a shoe sole may be separated accurately and indented in a uniform and satisfactory manner. V I

WVith the above object in View, a feature of the present invention comprises the provision in a janking-up machine of an indentingtool, novel work supporting and guiding means for presenting the tread surface. of the shoe to the action of the tool, and means for. actuating the tool to cause it to 10mm the intervals between the stitches, whether the stitches are of uni form or varying length and to feed the work.

By providing means for locating the in denting tool in the stitch intervals, injury to the thread or disfigurement of the stitch crowns is prevented in case a varia tion or irregularity in the length of the stitches occurs and a shoe bottom having the stitches cleanly marked and accentuated by' separating indentations is produced without any special skill or care on the part of the operator.

,c Stitch separating machines adapted to act only upon the outsea-m stitches appearing upon the welt of a shoe have heretofore been devised in which means were provided for located the" indenting tool in the intervals between the stitches. "Such machines,however, are not'adaptedfor operation upon the tread surface of a sole and are incapable of performing the operation of janking-upi It is believed that the in achine disclosed in the present applicationisthe first machine in the art by which the intervals between the stitches appearing onthe tread surface of a shoe sole can be accurately located. and

consequently is the firstmachine in the art by which-the janking-up operation canbe separately-performed=in a reliable and sat isfactor'y manner notwithstanding varia-' tions or irregularities in the'length of the stitches. i

' Another feature of the present invention comprises the provision, in a j anking-up machine, of an indenting tool, and work sup-f portingand guiding meansfor presenting the treadsurface of the shoe to theaction of the tool comprising a rigid work rest to engage the tread surface of the sole, and a. movablymounted work support arranged to engage the welt or upper surface of-the projecting sole edge across-itsfull' width' and support the work against'the'thrustof the indenting tool. .Thisfarrangement of work-#restnand Work support permits the use'or an indenting' tool which moves affixed and uniform distance beyond the surfaice of the work rest in engagement with the tread surface of the-sole so that a series of stitch separating indentations of uniform depth and appearance arefproduced on the sole surface. Preferablv the work support which engages the welt'or upper surface of the projecting sole edge is yieldingly mountedso asto press the work against the work rest and accommodate shoe soles of different thicknesses. Also preferably means are provided for locking th'e'work support rigidly in position during the indenting stroke of the tool. In the preferred form of the invention hereinafter specifically de scribed, the work support is also mounted so as to be capable of movement in a plane parallel to the tread surface of the sole, and

an unyieldingly mounted edge guide ispro vided against which the 'edge of 'the shoe sole may be pressed andby which the shoe similar to mechanism may be guided as itis fed to bring the stitch intervals successively into position to be acted upon by the indenting tool.

In addition to the features above referred to the present invention also consists in certain constructions, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

Referring to the drawings Fig. 1 is a view in side elevation partly in section of a janking-up machine embodying the several features of the present invention in their preferred form; Fig. 2 is a view in front elevation of some of the parts shown in Fig. 1; Fig. 8 is a plan view showing the upper and lower work supports and gage wheel; and F 41; is av plan view showing somewhat diagrammatically the relative positions of the base, the cam shaft, the treadles and the work supports of the machine.

In the machine illustrated in the drawings the mechanism for actuating the indenting tool ,to cause it to locate the inter- Vals between the stitches and indent and feed the work is substantially the same as that of the stitch separating and indenting machine designed for operation upon the welt surface of a shoe and fully disclosed in Letters Patent of the United States No. Wit-3,012, granted July 23, 1895, upon the 2119-.

plication of John B. Hadaway. Also 1n the machineillustrated in the drawings the work v support which sustains the work against the thrust of the indenting tool is mounted upon a vertical yielding slide which is forced upwardly and rigidly locked in position during the indenting Stroke of the indenting tool by mechanism disclosed in said Hadaway patent. V r 7 Referring to the drawings,'the indent ing tool is indicated at 1 and is'cla'mped in a tool holder 2-which is secured to a tool stock 3. This tool. stock is mounted upon the tool carrying frame or lever 4, which is carried by a feed slide and which is acted upon by a spring 5, tending to depress the lever and bring the indenting tool into en-v gagement with the work. 'The lever which acts upon the tool carrying frame to lift the tool from the work is indicated at 6 and the pressure lever, which acts positively to depress the tool carrying frame and cause the tool to indent the work, is indicated at 7. The lever which actuates the feed slide to impart stitch locating and work feeding movements to the tool is indicated at 8. The parts above described are or may be constructed and arranged to operate substantially as indicated and described in the patent to Hadaway above referred-to.

During the operation of the machine on a shoe, the shoe is supported and guided by a work rest 9 arranged to extend over the tread surface of the sole, a work support 10 arranged to enter the crease between the projecting sole edge and the upper and engage with its uppersurface the welt or upper surface ofthe projecting sole edge, and an unyieldingly mounted edge guide 11 consisting of a rotatable disk supported upon a stud rigidly secured in the work rest 9 and projecting downwardly therefrom so that the edge of the disk which engages and guides the sole edge is located between the work engaging surfaces of the rest 9 and support 10.

The work rest 9 is provided with a single forwardly projecting portion located at the side of the tool toward which the work is 1 and indenting operation can be continued close up tothe breast of the heel. Effective support is given the work, notwithstanding the absence of an arm on the right of the tool, because the rest 9 can be extended further forward without interference with any parts projecting from the tread face of the shoe.

The work support 10 comprises a plate which is pivotally mounted at its lower ends upon a pivot pin 12 extending between ears-13, projecting from the lower end of a vertically movable slide 1 1. This plate extends upwardly from its pivot for some five inches at a rearward inclination of about twenty degrees to the vertical when it sweeps in a gradual. curve forwardly again so that its upward extremity is more or less in thesame vertical plane as its pivot. The uppermost surface of this, work support is plane and horizontal so that it is adapted to support the upper or welt surface of the projecting sole edge of a shoe. The uppermost surface of the works support meets the front surface at an acute angle so that a horizontal edge is formed'on the front of the uppermost surface, which seats itself snugly in the crease of the shoe. The slide 141 is somewhat similar in construction to the corresponding slide of the machine of the Hadaway patent above referred to,

and is pressed yieldingly upward by a vertically movable slide 14 and acting upon.

a stud adjustably secured in the Work support near its pivotal connection with the slide.

forward movement under the influence of the'spring pressed plunger by engaging the rearward faces of the cap plates 22 by which the vertically movable slide is guided.

Gas heatingl'jets 23, and 24 are provided to heat both the tool and work support as it has been found that there is less likelihood ofthe work support defacing the already indented welt'when it and the surface iticontacts with are heated.

" To force the work support upwardly and lock it in position rigidly during the indenting stroke of the indenting tool, mechanism similar to that of the'machine of the Hadaway patent is provided comprising the pivotally mounted lever'25 having a block and slot connection at its forward end with the slide 14 and provided at its rear end with ratchet teeth 26 and a cam actuated lever 27 provided with a pawl 28 to cooperate with the ratchet teeth 26 on the lever 25.

In Fig. A of the drawings an arrangement of trea'dles is illustrated which is customarily used upon stitchseparating machines which are adapted to operate upon the welt surface of a shoe; In the customary operation of such machines the operator stands at one side of the machine, that is to say, with the mam shaft 29 extending'in a direction away from him and with the work feeding away from him. "For this purpose,

as illustrated in Fig. 4:, the treadle 80, con-' trolling the usual friction clutch by which the machine is put into operation andby which the speed of the machine is controlled, has afoot piece 31 on that side of the base of the machine column at which the operator stands and the foot piece 32 of the treadle controlling the work support is at the right front corner of the base. As

it is preferable in operating a janking-up 7 of the shoe sole with the tread surface uppermost is inserted between the work support 10 and work rest 9, the work support is allowed to rise thereby clamping the projecting edge of the sole between the work support and work rest, the shoe is forced rearwardly until the edge of the shoe sole Projections 21 on each side of .the worksupport near its upper end limit its terval, the work support is clamped ini-position, the indenting tool is caused to be ac tua'ted to make an indentation of predetermined depth, theworksupport is unlocked and the work is fed by the tool. -:The,.op-

erator-ismerely required to hold theshoein I position with the edgeof the sole against the edge guide 11 and regardless of varia tions or lrregularitles 1n the stitches appear-' ing on the tread surface of-the sole' -the stitches are separated andindented in an accurate, uniform and satisfactory manner. At the conclusion of the'janking-up opera tion the machine is stopped, the'work rest is lowered and the work removed. v I e V The object and nature-of the invention having been indicated and a specific embodiment of the several featur'esof the invention" having been specifically described, :whatis claimed isi j 1. A ankmg-up machine having,- in com bination, an. mdentrngtool, a rigid work rest to engage the tread surfaceof the sole,

an unyieldingly mounted :guide to engage the edge of the sole, and a'work support mounted to move so as to project more or less beyond said guide in aflplan'e parallel to the treadsurface of the sole and arranged to engage. the welt or upper surface ofthe projecting sole edge to support the work against the thrust of the indenting tool, said work' support being constructed i and ar ranged: automatically .to adjust itself to varying depths of the'welt crease.

2. A anking-up machine having, in combination, an indenting tool, a rigid Work rest to engage the tread surface of the sole, an unyieldingly mounted guide to engage the edge of the shoe sole, and'a work support 1 yieldingly mounted to move toward and from the work rest and also yieldingly mounted to move in a plane parallel to the tread surface of the sole and arranged to engage the welt or'upper surface of the projecting sole edge and sup. ort the work against the thrust of the in enting tool. I 3. A janking-up machine having, in combination, an indenting tool, work supporting and guiding means for presenting the tread surface of the shoe to theaction of the tool comprising a work support arranged to enter the angle between the upper and the surface of 'the shoe sole, an unyieldingly mounted guideto engage the edge of the shoesole, a work support arranged to engage the welt or upper surface of the projecting sole edge and support the work against the thrust of the indenting tool, and a yieldingly mounted slide upon which the work support is pivotally mounted so as to be capable of moving toward and from to the slide substantially vertically below the indenting tool to swing towards and from the guide thereby to adapt its posi tion to varying characteristics of the work, said support comprising a portion for engaging the welt or upper surface of a sole edge to support the shoe against the thrust of the indenting tool and an arched portion conforming to the bulged part of the upper.

6. A janking-up machine having, in combination, an indenting tool, a guide for the edge of a shoesole, aslide movable towards and from the indenting tool, a work support pivoted to the slide and having a portion for engaging the welt or upper surface of the sole, means for limiting the projection of said work supporting surface in front of said edge guide, and a spring for yieldingly resisting the movement of the work supporting surface towards the guide.

7 A janking-up machine havin in com bination, an indenting tool, a guide for the edge of a shoe sole, a slide movable vertically towards and from the indenting'tool, and a work support-having a surface to enter the angle between'the upper and'the projecting surface of the welt or sole to support the work against indenting pressure the tool substantially greater than the maximum depth of a shoe upper whereby the movement of the supportingsurface is in planes substantially parallel to the tread surface of the sole. 8. Mechanism for converting a stitch separating machine in which the indenting tool is actuated to feed the work away from the operator into a .janking-up machine in which the work is fed from side to side of the operator, comprising a work support constructed and arranged to engage a welt or sole edge to hold a shoe with its tread face upward under the tool, and a treadle for controlling the machine and extending to a point with respect to the axis of the machine approximately 90 from the usual controlling treadle.

' 9. A machine of the class described having, in combination, an indenting tool, means for actuating the tool to cause it to locate the intervals between stitches on a shoe sole and to feed the work, a rigid work rest having a single arm arranged at the side of the indenting tool toward .Which the ,work is fed to leave the space on the other rest.

' JOHN SMITH.

FRED RIGKS. 

